The only moderate we've been to is CBR this past April, and we loved it! This is after staying at WL and AKL on previous trips.
I have a DS14 and a DS11, and they loved CBR and insist we go back there on our next trip. My understanding is that CSR has a nicer pool, but the CBR main pool was fine with my kids, and they really liked the quiet pool in our area. They had a blast on the beaches, loved the hammocks, realllly liked the SeaRaycers on the lake, and had a good time in the arcade.
The food court was also a hit with them. They could walk in, get what they wanted, and be back out in a flash, and they never had trouble finding something they liked to eat!
We had great bus service, and the bus trips were pretty short, too, because CBR is centrally located. The longest ride we had was to MK, and that's not too bad either. We never waited long for a bus.
The rooms are smaller than SL, but they don't feel it. There's no balcony just for your room, but we were on the second floor and could just walk out our door to the exterior walkway and see the beach and the lake.
It sounds like all the Mods are great -- everyone probably has a different favorite. We just love CBR! I've got a handful of photos you can check out below. Also, check out the CBR FAQ's that Safetymom has put together -- lots of info, and she has lots more photos posted that you can check out!